Todd Gamblin cf9de058aa multimethods: avoid calling caller_locals() in Python 3 (#13238) ... Python 3 metaclasses have a `__prepare__` method that lets us save the class's dictionary before it is constructed. In Python 2 we had to walk up the stack using our `caller_locals()` method to get at this. Using `__prepare__` is much faster as it doesn't require us to use `inspect`. This makes multimethods use the faster `__prepare__` method in Python3, while still using `caller_locals()` in Python 2. We try to reduce the use of caller locals using caching to speed up Python 2 a little bit.		2019-10-17 06:40:23 -07:00
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spack	multimethods: avoid calling caller_locals() in Python 3 (#13238)	2019-10-17 06:40:23 -07:00